var fs = require('fs');
var path = require('path');
var assert = require('assert');

var summary = require('../').parse.summary;

function lex(fixtureFile) {
    return summary(
        fs.readFileSync(
            path.join(__dirname, 'fixtures', fixtureFile),
            'utf8'
        )
    );
}

var LEXED = lex('SUMMARY.md');

describe('Summary parsing', function () {

    it('should detect chapters', function() {
        assert.equal(LEXED.chapters.length, 6);
    });

    it('should support articles', function() {
        assert.equal(LEXED.chapters[1].articles.length, 2);
        assert.equal(LEXED.chapters[2].articles.length, 0);
        assert.equal(LEXED.chapters[3].articles.length, 0);
    });

    it('should detect paths and titles', function() {
        assert(LEXED.chapters[0].path);
        assert(LEXED.chapters[1].path);
        assert(LEXED.chapters[2].path);
        assert(LEXED.chapters[3].path);
        assert(LEXED.chapters[4].path);
        assert.equal(LEXED.chapters[5].path, null);

        assert(LEXED.chapters[0].title);
        assert(LEXED.chapters[1].title);
        assert(LEXED.chapters[2].title);
        assert(LEXED.chapters[3].title);
        assert(LEXED.chapters[4].title);
        assert(LEXED.chapters[5].title);
    });

    it('should normalize paths from .md to .html', function() {
        assert.equal(LEXED.chapters[0].path,'README.md');
        assert.equal(LEXED.chapters[1].path,'chapter-1/README.md');
        assert.equal(LEXED.chapters[2].path,'chapter-2/README.md');
        assert.equal(LEXED.chapters[3].path,'chapter-3/README.md');
    });

    it('should detect levels correctly', function() {
        var c = LEXED.chapters;

        assert.equal(c[0].level, '0');
        assert.equal(c[1].level, '1');
        assert.equal(c[2].level, '2');
        assert.equal(c[3].level, '3');

        assert.equal(c[1].articles[0].level, '1.1');
        assert.equal(c[1].articles[1].level, '1.2');
        assert.equal(c[1].articles[1].articles[0].level, '1.2.1');
    });

    it('should allow lists separated by whitespace', function() {
        var l = lex('SUMMARY_WHITESPACE.md');

        assert.equal(l.chapters.length, 6);
    });
});
